1 /**
2  * \file md_internal.h
3  *
4  * \brief Message digest wrappers.
5  *
6  * \warning This in an internal header. Do not include directly.
7  *
8  * \author Adriaan de Jong <dejong@fox-it.com>
9  */
10 /*
11  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
12  *  SPDX-License-Identifier: Apache-2.0
13  *
14  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
15  *  not use this file except in compliance with the License.
16  *  You may obtain a copy of the License at
17  *
18  *  http://www.apache.org/licenses/LICENSE-2.0
19  *
20  *  Unless required by applicable law or agreed to in writing, software
21  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
22  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23  *  See the License for the specific language governing permissions and
24  *  limitations under the License.
25  *
26  *  This file is part of mbed TLS (https://tls.mbed.org)
27  */
28 #ifndef MBEDTLS_MD_WRAP_H
29 #define MBEDTLS_MD_WRAP_H
30 
31 #if !defined(MBEDTLS_CONFIG_FILE)
32 #include "config.h"
33 #else
34 #include MBEDTLS_CONFIG_FILE
35 #endif
36 
37 #include "md.h"
38 
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42 
43 /**
44  * Message digest information.
45  * Allows message digest functions to be called in a generic way.
46  */
47 struct mbedtls_md_info_t
48 {
49     /** Digest identifier */
50     mbedtls_md_type_t type;
51 
52     /** Name of the message digest */
53     const char * name;
54 
55     /** Output length of the digest function in bytes */
56     int size;
57 
58     /** Block length of the digest function in bytes */
59     int block_size;
60 
61     /** Digest initialisation function */
62     int (*starts_func)( void *ctx );
63 
64     /** Digest update function */
65     int (*update_func)( void *ctx, const unsigned char *input, size_t ilen );
66 
67     /** Digest finalisation function */
68     int (*finish_func)( void *ctx, unsigned char *output );
69 
70     /** Generic digest function */
71     int (*digest_func)( const unsigned char *input, size_t ilen,
72                         unsigned char *output );
73 
74     /** Allocate a new context */
75     void * (*ctx_alloc_func)( void );
76 
77     /** Free the given context */
78     void (*ctx_free_func)( void *ctx );
79 
80     /** Clone state from a context */
81     void (*clone_func)( void *dst, const void *src );
82 
83     /** Internal use only */
84     int (*process_func)( void *ctx, const unsigned char *input );
85 };
86 
87 #if defined(MBEDTLS_MD2_C)
88 extern const mbedtls_md_info_t mbedtls_md2_info;
89 #endif
90 #if defined(MBEDTLS_MD4_C)
91 extern const mbedtls_md_info_t mbedtls_md4_info;
92 #endif
93 #if defined(MBEDTLS_MD5_C)
94 extern const mbedtls_md_info_t mbedtls_md5_info;
95 #endif
96 #if defined(MBEDTLS_RIPEMD160_C)
97 extern const mbedtls_md_info_t mbedtls_ripemd160_info;
98 #endif
99 #if defined(MBEDTLS_SHA1_C)
100 extern const mbedtls_md_info_t mbedtls_sha1_info;
101 #endif
102 #if defined(MBEDTLS_SHA256_C)
103 extern const mbedtls_md_info_t mbedtls_sha224_info;
104 extern const mbedtls_md_info_t mbedtls_sha256_info;
105 #endif
106 #if defined(MBEDTLS_SHA512_C)
107 extern const mbedtls_md_info_t mbedtls_sha384_info;
108 extern const mbedtls_md_info_t mbedtls_sha512_info;
109 #endif
110 
111 #ifdef __cplusplus
112 }
113 #endif
114 
115 #endif /* MBEDTLS_MD_WRAP_H */
116